Wyvern click to see monster

Size/Type: Large Dragon
Hit Dice: 7d12+14 (59 hp)
Initiative: +1
Speed: 20 ft. (4 squares), fly 60 ft. (poor)
Armor Class: 18 (-1 size, +1 Dex, +8 natural), touch 10, flat-footed 17
Base Attack/Grapple: +7/+15
Attack: Sting +10 melee (1d6+4 plus poison) or talon +10 melee (2d6+4) or bite +10 melee (2d8+4)
Full Attack: Sting +10 melee (1d6+4 plus poison) and bite +8 melee (2d8+4) and 2 wings +8 melee (1d8+2) and 2 talons +8 melee (2d6+4)
Space/Reach: 10 ft./5 ft.
Special Attacks: Poison, improved grab
Special Qualities: Darkvision 60 ft., immunity to sleep and paralysis, low-light vision, scent
Saves: Fort +7, Ref +6, Will +6
Abilities: Str 19, Dex 12, Con 15, Int 6, Wis 12, Cha 9
Skills: Hide +7, Listen +13, Move Silently +11, Spot +16
Feats: Ability Focus (poison), Alertness, Flyby Attack, MultiattackB
Environment: Warm hills
Organization: Solitary, pair, or flight (3-6)
Challenge Rating: 6
Treasure: Standard
Alignment: Usually neutral
Advancement: 8-10 HD (Huge); 11-21 HD (Gargantuan)
Level Adjustment:

A distant cousin to the true dragons, the wyvern is a huge flying lizard with a poisonous stinger in its tail.

A wyvern’s body is 15 feet long, and dark brown to gray; half that length is tail. Its wingspan is about 20 feet. A wyvern weighs about one ton.

Wyverns speak Draconic, but usually don’t bother with anything more elaborate than a loud hiss or a deep-throated growl much like that of a bull alligator.

Combat

Wyverns are rather stupid but always aggressive: They attack nearly anything that isn’t obviously more powerful than themselves. A wyvern dives from the air, snatching the opponent with its talons and stinging it to death. A wyvern can slash with its talons only when making a flyby attack.

Improved Grab (Ex)

To use this ability, a wyvern must hit with its talons. It can then attempt to start a grapple as a free action without provoking an attack of opportunity. If it wins the grapple check, it establishes a hold and stings.

Poison (Ex)

Injury, Fortitude DC 17, initial and secondary damage 2d6 Con. The save DC is Constitution-based.

Skills

Wyverns have a +3 racial bonus on Spot checks.